// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
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#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_reference.h"
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#include "core/fpdfapi/fpdf_render/include/cpdf_rendercontext.h"
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#include "core/fpdfapi/fpdf_render/include/cpdf_renderoptions.h"
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#include "core/fpdfdoc/cpvt_generateap.h"
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#include "core/fpdfdoc/include/fpdf_doc.h"
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#include "core/fxge/include/fx_ge.h"
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CPDF_AnnotList::CPDF_AnnotList(CPDF_Page* pPage)
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: m_pDocument(pPage->m_pDocument) {
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if (!pPage->m_pFormDict)
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return;
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CPDF_Array* pAnnots = pPage->m_pFormDict->GetArrayBy("Annots");
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if (!pAnnots)
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return;
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CPDF_Dictionary* pRoot = m_pDocument->GetRoot();
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CPDF_Dictionary* pAcroForm = pRoot->GetDictBy("AcroForm");
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FX_BOOL bRegenerateAP =
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pAcroForm && pAcroForm->GetBooleanBy("NeedAppearances");
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for (size_t i = 0; i < pAnnots->GetCount(); ++i) {
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CPDF_Dictionary* pDict = ToDictionary(pAnnots->GetDirectObjectAt(i));
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if (!pDict)
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continue;
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uint32_t dwObjNum = pDict->GetObjNum();
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if (dwObjNum == 0) {
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dwObjNum = m_pDocument->AddIndirectObject(pDict);
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CPDF_Reference* pAction = new CPDF_Reference(m_pDocument, dwObjNum);
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pAnnots->InsertAt(i, pAction);
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pAnnots->RemoveAt(i + 1);
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pDict = pAnnots->GetDictAt(i);
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}
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m_AnnotList.push_back(
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std::unique_ptr<CPDF_Annot>(new CPDF_Annot(pDict, this)));
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if (bRegenerateAP && pDict->GetStringBy("Subtype") == "Widget" &&
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CPDF_InterForm::IsUpdateAPEnabled()) {
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FPDF_GenerateAP(m_pDocument, pDict);
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}
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}
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}
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CPDF_AnnotList::~CPDF_AnnotList() {}
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void CPDF_AnnotList::DisplayPass(CPDF_Page* pPage,
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CFX_RenderDevice* pDevice,
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CPDF_RenderContext* pContext,
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FX_BOOL bPrinting,
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CFX_Matrix* pMatrix,
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FX_BOOL bWidgetPass,
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CPDF_RenderOptions* pOptions,
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FX_RECT* clip_rect) {
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for (const auto& pAnnot : m_AnnotList) {
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bool bWidget = pAnnot->GetSubType() == "Widget";
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if ((bWidgetPass && !bWidget) || (!bWidgetPass && bWidget))
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continue;
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uint32_t annot_flags = pAnnot->GetFlags();
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if (annot_flags & ANNOTFLAG_HIDDEN)
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continue;
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if (bPrinting && (annot_flags & ANNOTFLAG_PRINT) == 0)
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continue;
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if (!bPrinting && (annot_flags & ANNOTFLAG_NOVIEW))
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continue;
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if (pOptions) {
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CPDF_OCContext* pOCContext = pOptions->m_pOCContext;
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CPDF_Dictionary* pAnnotDict = pAnnot->GetAnnotDict();
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if (pOCContext && pAnnotDict &&
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!pOCContext->CheckOCGVisible(pAnnotDict->GetDictBy("OC"))) {
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continue;
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}
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}
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CFX_FloatRect annot_rect_f;
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pAnnot->GetRect(annot_rect_f);
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CFX_Matrix matrix = *pMatrix;
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if (clip_rect) {
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annot_rect_f.Transform(&matrix);
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FX_RECT annot_rect = annot_rect_f.GetOutterRect();
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annot_rect.Intersect(*clip_rect);
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if (annot_rect.IsEmpty()) {
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continue;
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}
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}
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if (pContext) {
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pAnnot->DrawInContext(pPage, pContext, &matrix, CPDF_Annot::Normal);
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} else if (!pAnnot->DrawAppearance(pPage, pDevice, &matrix,
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CPDF_Annot::Normal, pOptions)) {
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pAnnot->DrawBorder(pDevice, &matrix, pOptions);
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}
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}
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}
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void CPDF_AnnotList::DisplayAnnots(CPDF_Page* pPage,
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CFX_RenderDevice* pDevice,
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CPDF_RenderContext* pContext,
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FX_BOOL bPrinting,
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CFX_Matrix* pUser2Device,
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uint32_t dwAnnotFlags,
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CPDF_RenderOptions* pOptions,
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FX_RECT* pClipRect) {
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if (dwAnnotFlags & 0x01) {
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DisplayPass(pPage, pDevice, pContext, bPrinting, pUser2Device, FALSE,
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pOptions, pClipRect);
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}
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if (dwAnnotFlags & 0x02) {
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DisplayPass(pPage, pDevice, pContext, bPrinting, pUser2Device, TRUE,
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pOptions, pClipRect);
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}
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}
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CPDF_Annot::CPDF_Annot(CPDF_Dictionary* pDict, CPDF_AnnotList* pList)
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: m_pAnnotDict(pDict),
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m_pList(pList),
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m_sSubtype(m_pAnnotDict->GetStringBy("Subtype")) {}
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CPDF_Annot::~CPDF_Annot() {
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ClearCachedAP();
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}
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void CPDF_Annot::ClearCachedAP() {
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for (const auto& pair : m_APMap) {
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delete pair.second;
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}
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m_APMap.clear();
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}
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CFX_ByteString CPDF_Annot::GetSubType() const {
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return m_sSubtype;
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}
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void CPDF_Annot::GetRect(CFX_FloatRect& rect) const {
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if (!m_pAnnotDict) {
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return;
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}
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rect = m_pAnnotDict->GetRectBy("Rect");
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rect.Normalize();
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}
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uint32_t CPDF_Annot::GetFlags() const {
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return m_pAnnotDict->GetIntegerBy("F");
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}
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CPDF_Stream* FPDFDOC_GetAnnotAP(CPDF_Dictionary* pAnnotDict,
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CPDF_Annot::AppearanceMode mode) {
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CPDF_Dictionary* pAP = pAnnotDict->GetDictBy("AP");
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if (!pAP) {
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return nullptr;
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}
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const FX_CHAR* ap_entry = "N";
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if (mode == CPDF_Annot::Down)
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ap_entry = "D";
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else if (mode == CPDF_Annot::Rollover)
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ap_entry = "R";
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if (!pAP->KeyExist(ap_entry))
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ap_entry = "N";
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CPDF_Object* psub = pAP->GetDirectObjectBy(ap_entry);
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if (!psub)
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return nullptr;
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if (CPDF_Stream* pStream = psub->AsStream())
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return pStream;
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if (CPDF_Dictionary* pDict = psub->AsDictionary()) {
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CFX_ByteString as = pAnnotDict->GetStringBy("AS");
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if (as.IsEmpty()) {
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CFX_ByteString value = pAnnotDict->GetStringBy("V");
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if (value.IsEmpty()) {
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CPDF_Dictionary* pParentDict = pAnnotDict->GetDictBy("Parent");
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value = pParentDict ? pParentDict->GetStringBy("V") : CFX_ByteString();
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}
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if (value.IsEmpty() || !pDict->KeyExist(value))
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as = "Off";
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else
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as = value;
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}
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return pDict->GetStreamBy(as);
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}
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return nullptr;
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}
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CPDF_Form* CPDF_Annot::GetAPForm(const CPDF_Page* pPage, AppearanceMode mode) {
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CPDF_Stream* pStream = FPDFDOC_GetAnnotAP(m_pAnnotDict, mode);
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if (!pStream)
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return nullptr;
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auto it = m_APMap.find(pStream);
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if (it != m_APMap.end())
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return it->second;
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CPDF_Form* pNewForm =
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new CPDF_Form(m_pList->GetDocument(), pPage->m_pResources, pStream);
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pNewForm->ParseContent(nullptr, nullptr, nullptr);
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m_APMap[pStream] = pNewForm;
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return pNewForm;
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}
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static CPDF_Form* FPDFDOC_Annot_GetMatrix(const CPDF_Page* pPage,
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CPDF_Annot* pAnnot,
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CPDF_Annot::AppearanceMode mode,
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const CFX_Matrix* pUser2Device,
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CFX_Matrix& matrix) {
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CPDF_Form* pForm = pAnnot->GetAPForm(pPage, mode);
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if (!pForm) {
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return nullptr;
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}
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CFX_FloatRect form_bbox = pForm->m_pFormDict->GetRectBy("BBox");
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CFX_Matrix form_matrix = pForm->m_pFormDict->GetMatrixBy("Matrix");
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form_matrix.TransformRect(form_bbox);
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CFX_FloatRect arect;
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pAnnot->GetRect(arect);
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matrix.MatchRect(arect, form_bbox);
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matrix.Concat(*pUser2Device);
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return pForm;
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}
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FX_BOOL CPDF_Annot::DrawAppearance(CPDF_Page* pPage,
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CFX_RenderDevice* pDevice,
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const CFX_Matrix* pUser2Device,
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AppearanceMode mode,
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const CPDF_RenderOptions* pOptions) {
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CFX_Matrix matrix;
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CPDF_Form* pForm =
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FPDFDOC_Annot_GetMatrix(pPage, this, mode, pUser2Device, matrix);
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if (!pForm) {
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return FALSE;
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}
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CPDF_RenderContext context(pPage);
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context.AppendLayer(pForm, &matrix);
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context.Render(pDevice, pOptions, nullptr);
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return TRUE;
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}
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FX_BOOL CPDF_Annot::DrawInContext(const CPDF_Page* pPage,
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CPDF_RenderContext* pContext,
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const CFX_Matrix* pUser2Device,
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AppearanceMode mode) {
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CFX_Matrix matrix;
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CPDF_Form* pForm =
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FPDFDOC_Annot_GetMatrix(pPage, this, mode, pUser2Device, matrix);
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if (!pForm) {
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return FALSE;
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}
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pContext->AppendLayer(pForm, &matrix);
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return TRUE;
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}
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void CPDF_Annot::DrawBorder(CFX_RenderDevice* pDevice,
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const CFX_Matrix* pUser2Device,
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const CPDF_RenderOptions* pOptions) {
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if (GetSubType() == "Popup") {
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return;
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}
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uint32_t annot_flags = GetFlags();
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if (annot_flags & ANNOTFLAG_HIDDEN) {
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return;
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}
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bool bPrinting = pDevice->GetDeviceClass() == FXDC_PRINTER ||
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(pOptions && (pOptions->m_Flags & RENDER_PRINTPREVIEW));
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if (bPrinting && (annot_flags & ANNOTFLAG_PRINT) == 0) {
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return;
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}
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if (!bPrinting && (annot_flags & ANNOTFLAG_NOVIEW)) {
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return;
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}
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CPDF_Dictionary* pBS = m_pAnnotDict->GetDictBy("BS");
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char style_char;
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FX_FLOAT width;
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CPDF_Array* pDashArray = nullptr;
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if (!pBS) {
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CPDF_Array* pBorderArray = m_pAnnotDict->GetArrayBy("Border");
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style_char = 'S';
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if (pBorderArray) {
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width = pBorderArray->GetNumberAt(2);
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if (pBorderArray->GetCount() == 4) {
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pDashArray = pBorderArray->GetArrayAt(3);
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if (!pDashArray) {
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return;
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}
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size_t nLen = pDashArray->GetCount();
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size_t i = 0;
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for (; i < nLen; ++i) {
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CPDF_Object* pObj = pDashArray->GetDirectObjectAt(i);
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if (pObj && pObj->GetInteger()) {
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break;
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}
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}
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if (i == nLen) {
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return;
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}
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style_char = 'D';
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}
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} else {
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width = 1;
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}
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} else {
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CFX_ByteString style = pBS->GetStringBy("S");
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pDashArray = pBS->GetArrayBy("D");
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style_char = style[1];
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width = pBS->GetNumberBy("W");
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}
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if (width <= 0) {
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return;
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}
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CPDF_Array* pColor = m_pAnnotDict->GetArrayBy("C");
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uint32_t argb = 0xff000000;
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if (pColor) {
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int R = (int32_t)(pColor->GetNumberAt(0) * 255);
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int G = (int32_t)(pColor->GetNumberAt(1) * 255);
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int B = (int32_t)(pColor->GetNumberAt(2) * 255);
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argb = ArgbEncode(0xff, R, G, B);
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}
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CFX_GraphStateData graph_state;
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graph_state.m_LineWidth = width;
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if (style_char == 'D') {
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if (pDashArray) {
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size_t dash_count = pDashArray->GetCount();
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if (dash_count % 2) {
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dash_count++;
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}
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graph_state.m_DashArray = FX_Alloc(FX_FLOAT, dash_count);
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graph_state.m_DashCount = dash_count;
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size_t i;
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for (i = 0; i < pDashArray->GetCount(); ++i) {
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graph_state.m_DashArray[i] = pDashArray->GetNumberAt(i);
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}
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if (i < dash_count) {
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graph_state.m_DashArray[i] = graph_state.m_DashArray[i - 1];
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}
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} else {
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graph_state.m_DashArray = FX_Alloc(FX_FLOAT, 2);
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graph_state.m_DashCount = 2;
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graph_state.m_DashArray[0] = graph_state.m_DashArray[1] = 3 * 1.0f;
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}
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}
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CFX_FloatRect rect;
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GetRect(rect);
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CFX_PathData path;
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width /= 2;
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path.AppendRect(rect.left + width, rect.bottom + width, rect.right - width,
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rect.top - width);
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int fill_type = 0;
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if (pOptions && (pOptions->m_Flags & RENDER_NOPATHSMOOTH)) {
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fill_type |= FXFILL_NOPATHSMOOTH;
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}
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pDevice->DrawPath(&path, pUser2Device, &graph_state, argb, argb, fill_type);
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}
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